W-9 vs 1099: What Is the Difference and When Do You Use Each

Blog Summary / Key Takeaways

• A W-9 is filled out by the contractor and given to the business, it collects their tax ID
• A 1099-NEC is filed by the business with the IRS - it reports what was paid to that contractor
• You need a W-9 before you pay a contractor. You file a 1099 after paying them $600 or more in a year
• They work together: the W-9 gives you the information you need to file the 1099 correctly
• Businesses that skip the W-9 at onboarding end up chasing information at 1099 filing time in January
• Accounting firms managing contractor-heavy clients need a reliable process for collecting, W-9s before payments go out

Every January, accounting firms deal with the same client problem: a business that paid 15 contractors throughout the year, never collected a W-9 from any of them, and now needs to file 1099s by the end of the month.

The W-9 and 1099 are not complicated forms. But the confusion between them what each one is for, who fills it out, who receives it, and when it is needed creates real problems for businesses and their accountants every year.

This guide explains both forms clearly, how they work together, and what accounting firms should tell their clients to do so that January is not a scramble.

What Is a W-9?

A W-9 is an IRS form called Request for Taxpayer Identification Number and Certification. It is filled out by the person or business being paid the contractor, freelancer, vendor, or service provider.

The W-9 collects four pieces of information:

• Legal name or business name
• Federal tax classification (individual, LLC, S-Corp, C-Corp, partnership, etc.)
• Address
• Taxpayer Identification Number (Social Security Number or EIN)

The W-9 is not sent to the IRS. It is given by the contractor to the business that is paying them. The business keeps it on file and uses the information on it to prepare the 1099 at year end.

What Is a 1099?

A 1099 is a family of IRS information returns that report income paid to someone who is not an employee. The most relevant form for most small businesses is the 1099-NEC (Non-Employee Compensation).

The 1099-NEC is filed by the business not the contractor and reports how much was paid to each non-employee during the year. It goes to both the contractor and the IRS.

The filing threshold is $600. If a business pays a contractor $600 or more in a calendar year, it must file a 1099-NEC for that person or business.

W-9 vs 1099: The Core Difference

How W-9 and 1099 Work Together

These two forms are part of the same workflow. They are not alternatives you need both.

Here is how the sequence works:

• A business hires a freelancer or contractor

• Before the first payment, the business sends a W-9 request

• The contractor completes the W-9 and returns it to the business

• The business makes payments throughout the year and keeps records

• At year end, the business uses the W-9 information to prepare the 1099-NEC

• By January 31, the business files the 1099-NEC with the IRS and sends a copy to the contractor

The W-9 makes the 1099 possible. Without the W-9, you do not have the contractor's tax ID, and you cannot file the 1099 correctly.

When Do You Need a W-9?

The Most Common W-9 and 1099 Mistakes

Collecting W-9s after the work is done. This is the most common mistake. Clients pay contractors all year, then try to collect W-9s in January. Collect the W-9 before the first payment always.

Assuming corporations do not need a W-9. Corporations are generally exempt from 1099-NEC filing, but you still need their tax ID to make that determination. Collect the W-9 regardless.

Missing the $600 threshold across multiple payments. A contractor paid $200 in March, $300 in July, and $150 in November has been paid $650 total. A 1099 is required. Track cumulative payments.

Filing with the wrong name or TIN. If the name and TIN on the 1099 do not match IRS records, the IRS sends a CP2100 notice and may require backup withholding at 24%.

Confusing 1099-NEC with 1099-MISC. 1099-NEC is for non-employee compensation. 1099-MISC covers rent, prizes, attorney payments. Using the wrong form creates filing problems.

What Happens If You Do Not File a 1099?

For a business that paid 20 contractors and filed no 1099s, the penalty for intentional disregard is $12,600 minimum. Collecting W-9s at contractor onboarding is the prevention.

Real Scenario: A Marketing Agency That Chased W-9s Every January

A seven-person marketing agency used freelancers heavily designers, copywriters, video editors. They paid contractors throughout the year via bank transfer without collecting W-9s upfront.

Every January, the firm owner would send a mass email to all contractors requesting W-9s. Some responded. Some did not. The accountant would spend two weeks chasing forms and correcting names.

In year three, the accountant built a one-page contractor onboarding checklist that required a completed W-9 before the first invoice was approved for payment.

The following January, every 1099 was filed on time with no corrections required. Time savings: approximately 14 hours of accountant time recovered from a two-week scramble.

How Xenett Can Help

For accounting firms managing clients with contractor workforces, the W-9 and 1099 workflow is a recurring source of January stress. Xenett makes it a structured process.

• Document request workflows: send W-9 collection requests to clients automatically at contractor onboarding

• Client portal: contractors submit completed W-9s directly no email attachments or lost forms

• Task automation: year-end 1099 preparation tasks auto-generate in December for every relevant client

• Close Dashboard: track which clients have outstanding W-9 collection tasks before year-end filing begins

1,000+ accounting and bookkeeping firms use Xenett to manage recurring compliance workflows like this without building them manually each year.

Book a 15-minute demo at xenett.com/demo.

FAQs

What is the difference between a W-9 and a 1099?

A W-9 is filled out by the contractor and given to the business it provides their tax ID. A 1099-NEC is prepared by the business and filed with the IRS it reports what was paid. W-9 is collected first; 1099 is filed at year end using the W-9 information.

Do I need both a W-9 and a 1099 for every contractor?

You need a W-9 from every contractor before paying them. You file a 1099-NEC for every contractor you pay $600 or more in a calendar year.

Does a contractor fill out a W-9 or a 1099?

The contractor fills out the W-9. The business fills out the 1099. Contractors receive a copy of the 1099 that was filed on their behalf.

What if a contractor refuses to provide a W-9?

You are required to implement backup withholding at 24% of all payments until a W-9 is provided. Do not pay contractors without a W-9 on file.

Is a W-9 required for payments under $600?

Technically no but best practice is to collect a W-9 at the start of any contractor relationship regardless of expected payment amount, since payments can exceed $600 across a year.

Do corporations need to fill out a W-9?

Yes, you should still collect a W-9 from corporations even though most corporate payments are exempt from 1099-NEC filing. The W-9 confirms their tax classification.

When is the 1099-NEC due?

January 31 of the year following the tax year both to the contractor and filed with the IRS.

Conclusion

The W-9 and 1099 are not complicated. They are a two-step sequence: collect the W-9 before you pay, file the 1099 after you have paid. The problems happen when step one gets skipped and everything piles up in January.

For accounting firms, the best service you can provide on this topic is helping clients build the process that makes January straightforward.

See how Xenett helps accounting firms manage year-end compliance workflows: xenett.com/demo